Holder and positioner for heel parts



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HOLDER AND POSITIONER FOR HEEL PARTS Filed Dec. 12, 1942 s Sheeizs-$heet1 5 Sheets-Sheet 2 E. C. GILL Filed Dec. 12, 1942 HOLDER ANDPOSIIIIIOIUEER FOR HEEL PARTS WVEA/T R Get. 8, 194a,

E. C. GILL HOLDER AND POSITIONERFOR HEEL PARTS Filed Dec. 12, 1942 5Sheets-Sheet 3 @ct, 8, 1946, c GlLL HOLDER AND POSITIONER FOR HEELPAR\TS 5 Sheets-Sheet 4 Filed Dec. 12, 1942 w. s, 1946. E. c. GILL2,408,844

HOLDER AND POSITIONER FOR HEEL P ARTS FilegiDec. 1 2, 1942 5 SheetsSheet5 Fig :19 m 24 10$ ll l Patented Oct. 8, 194-6 UNITED STATES PATENTOFFICE p nies AND rQSI B FOR EE PARTS Emerson G. Gill, Melrose, Mass,assignor to United Shoe Machinery Corporation, Fleming- 7 ton, N. J acorporation of NewJersey Application December 12, 194 2 Serial No.468,774

5 Claims. (01. 1-32) This invention relates to machines by whichfastenings, such a fiber pegs, are driven to effect the connection ofwork-pieces. Machines of this character may beemployed for theattachment to shoes of heel-parts, as bases and lifts of rubber or thelike.

In heeleattaching machines, a base and a rubber lift are commonlypresented. to the inserting die in superposed relation to receivecontact of the heel-seat of a shoe to which they are to be secured. Myinvention has as an object the provision of holders into which theheel-parts may be readily introduced by the operator and which willlocate said parts accurately With respect to the fastening-receivingopenings of the die and to each other. This I accomplish by theemployment of two pairs of pivoted arms arranged one above the other,one pair holding a heel-:base and the other a heel-lift, together withmeans for forcing the arms of each pair yieldably toward each other.Each arm of a pair is preferably provided with two projections forengagement with the heel-part to be held, arranged to contact with thecorresponding part and locate it from front to rear of the machine andturn it about an axis heightwise of the heel-parts until said parts arearranged in a predetermined angular relation to each other and to theinserting design in accordance with which are. arranged elements offastening-inserting mechanism. This positioning is attained without thenecessity for consideration on the part of the operator, To provide forthe correct presentation to the fastening-inserting mechanism of theheel-parts of different sizes and. different nailing designs, the armsare preferably pivoted upon carriers which may be varied in positionindependently in a direction from front to rear of the heel-parts. Toprevent injury to the arms by movement resulting from comp ssi of the wk the r r e tions are shown as mounted to yield heightwise of theheel-:parts, this being especially applicable to the base-holder.

The guard for the die-projections and the means which insures thematching and registration of elements of the fastening-insertingmechanism are made the subjects of divisionalapplications, Serial No.544,l95 filed Ji 12, 1944, and Serial No. 544,494 filed July 12, 1944,respectively, the latter application having become Patent No. 2,376,910,May 29, 1945.

In h c p ng d awings;

l h s i Side tiqn w h lements n section, portions of aheel-attachingmachine with which the present invention is more directly concerned;

Fig. 2 is a front elevation of the lower portion of Fig. 1;

Fig. 3, an enlarged transverse sectional detail through thelift-engaging elements, taken prior to the clamping of the work;

Fig. 8, a front elevation of the starting lever of the machine and itsconnections;

Fig. 9, a side elevation of the elements shown in Fig. 8;

Fig. 10, a view similar to Fig. 3, but with the work under pressure;

Fig. 11, a view of the lift-holder, corresponding to Fig. 6; and

Fig. 12, an enlarged detail in broken front elevation of one of theforward pairs of lift and basesengagmg members of the holder mechanism.

The general organization of a heel-attaching machine to which thepresent invention is applicable may be that disclosed in Letters Patentof the United States No. 2,293,624, Parkhurst, August 18, 19%2, and incertain respects in No. 2,207,742, La, Chapelle, July 16, 1940, thesemachines being designed for the attachment of heelbases and top-lifts toshoes. In apparatus of this character, there is mounted upon a frame IDa die-block L2, in which are vertical passages M to receive thefastenings to be inserted. These passages may include a multiple of allthe designs which are to be employed The die-block is shown as separablymounted in place by screws l6 threaded vertically into the frame. Theportion of the die-block with which the. work contacts is provided byaplate 18, carried in ways 20 at the underside of the die and latched-inplace by a spring-plunger 22, movable through said die and entering anopen ng at the front of the plate. The passages througjhtthe platecerresponding to those of a particular nailing design in the dieterminate in depending quills 2d. The quills enter the surface of arubber or other elastic lift to be attached, and compress the materialover the area therein through which the attaching ia eni ss are tore dven. Thes ia t n e 3 pass through this lift and a heel-base, carried atthe underside of the die-quill-plate by holder mechanism M, and into theheel-seat of a shoe which is pressed against the base by a verticallyreciprocable jack (not illustrated) and upon which it is supported. Thefastenings are preferably out from strings of fiber F-(Fig. 1),delivered through tubes 26 terminating in a foot-plate 28, and severedby a loader-block 30 having a compound movement of translation andoscillation. Actuated by mechanism 32 (Fig. 4), the loaderblock deliversthe cut fastenings to the die-blockpassages 14. The insertion of thefastenings in the work is effected by a gang of drivers 34, which I mayfirst act as awls, as in the previously mentioned La Chapelle patent.These drivers are fixed in a plate 36 carried by a top-girt-38 upon siderods 40, 49 reciprocating vertically in the frame It. The plate 36 isseparably mounted in opposite ways 42 upon the top-girt, it beinglatched by a spring-plunger 44 movable in said top-girt and received ina depression in the edge of the plate. The gang of drivers operates inthe corresponding group of multiple die-passages 14, it being changedtogether with the quill-plate l8 as the inserting design varies. Theside rods areactuated from power mechanism through a clutch (not shown).7

Considering now the features peculiar to this invention, the mechanism Mincludes a heelbase-holder m and a top-lift-holder m (Figs. 5, 6, 11 and12). The respective holders have carrier members 50, each of which is ofL-shape and has an arm 52 or 52' extending from front to rear of themachine, from the rear extremity of whichprojects a transverse arm '54or 54. The arms 52 and 52 of the two holders lie at opposite sides ofthe die-blockrl2, while the arms 54 and 54' are superposed, thearm 54 ofthe holder m being uppermost. They are adjustable fore and a aft byvirtue of their support upon the heads of screws 56 or 56, threadedvertically into the underside of the die-block and passing through slots58'or 58' extending longitudinally of the carrierarms 52. One of therear screws 56" at the opposite ends of the transverse arms 54 and 54may be common to the two carriers, through openings 58" in which theypass. To vary the position of the holders, the forward extremity of eachof the arms 52 and 52' has a depression 60 or 60 in which lies a collar62 or 62 upon a screw 64 or 64', threaded horizontally into the front ofthe die-block and rotatable by a head 66 or 66'. With the screws 56 and56 loosened, either of the screws 64 or 64 may be turned by its headsituated conveniently for the operator at the front of the machine, andthe holders m. and m brought to the correct relation to each other andto the passages in the die-block for the particular inserting design inuse. In this adjusted position,the carriers may again be locked bytightening the screws 56 and 56'. Each of the carrier-arms 54 and .54 isdepressed between its extremes to receive a pair of locating andgrasping arms for heel-parts, those'for the base-holder m beingdesignated as 10, 10 and those for the lift-holders m as 12, 12. Thearms of the pairs 10 and 12 are pivoted separately at 14 and 14',respectively, upon-the arms 54 and 54' of their carriers and cross eachother from the pivots to their" forward heel-part-engaging portions.Each of the pairs of arms 10 and 12 are given support against downwarddeflection by a screw 68 or 68', threaded upwardly into the arm 52 or52' 0f the corresponding carrier 50'or 50" and 4 passing through anarcuate slot 69 or 69' in the lower arm of the pair. This lower armrests upon the head of the screw, and, in turn, supports the upper armwhich moves in contact with it at the point of intersection of the arms.The arms of each pair are geared at 1B or 19' to oscillate together, andthe approach of their forward ends under the influence of atensionspring 18 or 18 connecting them is adjustably limited by astop-screw or 80' threaded horizontally through one and engaging theother. For contact with a periphery of a lift inserted between the armsof the holder m (Fig. 11) there is located upon their inner edges infront of the intersection of said arms opposite projections 82,

82, while at their forward extremities are rotatable about vertical axesrolls 84, 84 having reduced peripheral portions (Fig. 3). Upon the armsof the base-holder m (Fig. 6) are similarly situated rear contactmembers 88, 88 and forward contact members 90, 90. These are shown aslevers fulcrumed at92 beneath the arms and each urged normally down atits inner end by an expansion-spring 94 interposed between it and thearm upon the inner side of the fulcrum. The contact of the outer end ofthe lever with the arm determines its normal angular position. Asindicated at 96 in dash-lines in Fig. 6, contact-rolls may be placedupon the inner ends of the levers 96, if this be desirable.

In applying heel-parts to'the holders 1n and m, the operator presses alift T between the rolls 84, the arms 12 of the holder mf yieldingagainst their spring 18' to admit the lift and the rotation of the rollsfacilitating the inward movement. This continues until the rear of thelift at the opposite sides of the longitudinal axis strikes thearm-projections 82. These furnish a back-stop which determines theposition of the lift along this longitudinalaxis. As the operator freesthe lift, the pressure of the rolls against the opposite sidesbetweenthe breast and the center will turn said lift about a verticalaxis, if it is not already symmetrically located, until the longitudinalaxis is centralized with'respect to the passages I4 in the die-block I 2and its quills 24. In this rotation of lift, it remains in engagementwith the projections 82, so its position from front to rear of thedie-block is determined. A heel-base H is similarly inserted between thearms of the holder m against the levers 88, the unfinished peripheryprojecting beneath the reduced peripheries of the rolls 84 and is turnedby the contact of the inner ends of the levers or the rolls 96 uponthem, its correct location both longitudinally and angularly beingattained in the same manner as the lift T.

Were it necesary to insert the lifts into the holder m in contact withthe ends of the spaced quills 24, there would tend to be interferencewith the movement. To prevent this, the lower portions of the quills areshrouded by guard-plate I00. This plate is movable in a recess at theunderside of the. quill-plate I 8 (Fig. 3), it being held againstdownward displacement by the headsof screws I02, which extend throughopenings in the quillplate and are threaded vertically into theguard-plate In the guardplate is an opening 104 for the receptiono'f'each quillf the lower end of which lies normally above the lowersurface of the plate (Fig. 3). In its lowered position, the guard-plateis yieldably maintained by expansionrsprings I96 "having their oppositeextremities seated infrec'esse's in the quill-plate and guard-plate. The

underface of the guard-plate presents a surface free from interferingprojections when the toplifts are slid into place in the holder m. Yet,when clamping pressure goes upon the work (Fig. as a result Of theelevation of theshoesupporting jack in preparation for the insertion ofthe fastenings by the drivers 34, the guardplate yields freely, so thequills will enter the substance of a rubber lift.

Since the drivers 34 and the associated quillplate I8 of the die I2 withits guard-plate I09 must be changed whenever the inserting design isaltered, it is important that there be means for ensuring the matchingof the driver-assembly and the quill-plate, and that they are in theirproper positions before operation of the machine. This is to avoiddamage by contact of the drivers with the die and possible consequentinjury to the operator. I accomplish the desired result in the followingmanner. The space above the die is closed, when the machine is inoperation, by a door Iii! hinged at H2 at the left of the frame It (Fig.'7). This door interposes a shield between the inserting mechanism andthe operator, and has a transparent panel II3 through which the deliveryof fastenings by the loader-block 3D to the die may be seen. The innerside of the door is provided with a testing member for the driver-plate36 and for the quillplate I8. This member is shown as in the form of avertical bar H4 risin from a carrier-block H5 (Figs. 1, 4 and 5), whichis adjustably attached to the door by a screw II8 passing through eitherof two horizontal slots I20, I20

in said door and threaded into the block (Fig.

'7). The inner edge of the bar is reduced at I22, and, receiving thisreduced portion, when the door is closed, is a depression I24 in theforward edge of the driver-plate and a depression I26 in thequill-plate. These depressions are in vertical registration for eachmatching pair of platesand are differently arranged in each pairtransversely of the machine for all the inserting designs. When theoperator must change the position of the driven fastenings because ofthe differing I character of the work, he adjusts the matching bar inone or the other of the slots I26, until it will enter the verticallyalined depressions I24, I26. Consequently, when the door can be closed,

it follows that the driver-plate'and quill-plate supplied willco-operate correctly, if each is fully in place and latched by therespective plungers 44. and 22. In the reciprocation of thedriverassembly, the depression I24 .in the plate 35 travels freely alongthe bar-portion I22.

That the proper positioning of the fasteninginserting elements may bemade certain, the condition of the retaining plungers 44 and 22 controlsthe full closure of the door IID. At the lower portion of the inner sideof this door is a projection I28. When the door is closed, the underface of the projection lies just above the head of the plunger 22.Therefore, until said plunger has entered the depression in the newlyapplied quill-plate, the shutting of the door cannot be completed, andthe operator will thus know that the quill-plate is not in place. Withthe plunger in the quill-plate-depression and the door-projection I28above it, not only is the door closed, but the locking of the plate ismaintained. Similarly, the closure of the door is governed by avertically elongated projection or rib I39 at the inner right portion ofsaid door. If the locking plunger 44 for the driver-plate is not seatedin the plate-depression, the rib will strike the reciprocation of thedrivers moves along and in close proximity to the adjacent verticalsurface of the rib, so the driver-plate cannot be unlocked accidentally.

The door I II) having provided for the matchin and correct positioningof the fastening-inserting elements as above described, it is furthercaused to prevent the power-operation of the machine and consequentreciprocation of the drivers 34, until this has been accomplished. Sucha result is attained by locking the starting mechanism of the machineagainst actuation by the operator, until the door is closed. The-clutch,through which power is applied to reciprocate the side rods 49, istripped by movement of a rod I32 guided in a bracket I34 attached to theframe III (Figs. 8 and 9), and movable downwardly and rearwardly againstthe force of an expansion-spring I36 interposed between the rod and thebracket. This movement of the rodis effected by a hand-lever I38fulcrumed upon the bracket and having threaded through it a screw I40,which contacts with the upper end of the rod. A rearwardly extending armI42 of the lever is pivoted to a bar I44, guided at I46 upon the frame(Fig. 7) for upward movement when the lever is depressed. The upper endof the bar lies just below the plane of the underface of a locking slideI48. This slide is guided for horizontal movement upon the frame infront of the die-block I2, and when the machine is in condition foroperation the right end of the slide terminates short of the upper endof the bar I44. At its opposite extremity, the slide has formed upon itrack-teeth I59 with which meshes a pinion I52 surrounding the door-hingeH2 and turning with the door. When said door is closed, the pinion holdsthe locking slide at its extreme position to the left, in which theother end leaves the bar free to be raised. The operator can at thistime lower the hand-lever I38 and trip the clutch to start the machinein operation. If the door is out of its fully closed position, thegearing between the door and slide at once carries the end of said slideover the bar. This locks the hand-lever against actuation so, if theclosure of the door is prevented by mismatched fastening-insertingelements or by their improper location, starting of the machine isimpossible. That the door when closed shall so remainduring theoperation of the machine, maintaining the fastening-inserting elementsin their correct relation, it is shown as latched by a springplungerI54, movable vertically in its lower free portion and engaging aretaining member I56 projecting from the frame Ill (Figs. land 7). Aninclined surface I50 at the forward extremity of the member serves, bycontact of the plunger with it, to lift this as the door approachesclosure, said plunger entering a latching depression ISO in theretaining member when the door is fully closed.

Assume that the machine of this invention is to be employed for theattachment to a shoe of a heel-base H and an elastic lift T, byfastenings cut from strings F of fiber and driven through prickedopenings in said lift and base, and that it is necessary to change theinserting design. The door III), which has been closed during thepreceding operation, is freed from the latch I54 and opened. Theoperator then releases the driver-assembly by withdrawing the plunger44,

and removes it, and similarly frees the quille plate I8 from the plunger22 and takes it from the machine. He, thereupon, selects another pair ofthese fastening-inserting elements arranged in accordance with thechosen design, and inserts them in their respective ways 42 and 20. Withthe inserting elements properly matched and fully positioned, theirrespective depressions I24 and I 26 will register or be in verticalalinement, and the door II may be closed, its bar-portion I22 havingbeen adjusted to the correct transverse position to enter thesedepressions. Further, if the new pair of inserting elements has beenfully seated in their ways, their latches 44 and 22 will have engagedthe respective depressions in the driver-plate 36 and the quill-plateI8, and will be out of the path of the door-projections I30 and I28.Therefore, the closure of the door is not interfered with in thisrespect, and when fully shut and secured by the latch I54, the gearingI52, I50 between the door and the locking slide I48 will have drawn saidslide toward the left to free the startinglever I38 of the machine,ready for actuation. Taking one of the lifts, the operator pushes itback into the holder m, it moving smoothly over the plane surface at theunderside of the plate I00 (Fig. 3) which guards the die-quills 24, andbetween the rolls 84. When the lift contacts with the arm-projections82, its rearward progress is arrested, and, as it is released by theoperator, the forcing of the rolls against the periphery near the breastwill turn it upon the projections 84 in such a direction as tocentralize it angular-1y, as well as to maintain it locatedlongitudinally with reference to the shoe to which it is to be attached.The base H may now be forced between the arms of the holder m andpositioned in a like manner. For the particular work in hand, thecarriers 50 and 50' of the two holders will have been adjusted throughthe screws 54 and 64 toproperly register the lift and base with eachother and with the quills 24. A shoe is jacked and its heel-seat pressedagainst the. cup of the base H to clamp the work for the insertingoperation. As pressure is applied, the plate I00 yields against thesprings IIJIi a-nd the quills are seated in the substance of the lift tocompress the elastic material (Fig. 10). The operator depresses thelever I38, freed by the full closure of the door III), to trip thedriving clutch. A power-cycle of the machine is thereupon performed, theloader-block 30 severing a group of discrete fastenings from the stringsF and delivering them above the die-passages I4 to be inserted in thework by the drivers 34,

which have previously been actuated to prick openings to receive thesefastenings. The shoe with its attached base and lift may now be freedvfor removal from the machine. 7

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

1. In a heel-attaching machine having fastening-inserting mechanismprovided with fastening-receiving passages and cooperatingfastening-drivers arranged in accordance with an inserting design, thecombination of a pair of pivoted base-engaging arms, a pair of pivotedlift-engaging arms, and means for yieldably forcing the arms, of eachpair toward each other, the pairs 0 farms being located one above theother and ch pair being provided with projections arranged to contactwith a base or lift to locate it in a direction from front to rear ofthe inserting design of the fastening-inserting mechanism and by theirlateral pressure to turn it about an axis heightwise of the heel-partsinto a predetermined angular relation to the said design and to theassociated heel-part.

2. In a holder for heel-parts, a pair of pivoted arms each provided witha projection for engagement with the periphery at the rear of aheel-part at each side of its longitudinal axis and with a projectionfor engagement with such periphery adjacent to the breast, suchprojections being mounted upon the arms to yield heightwise of theheel-part, and means for yieldably forcing the arms toward each other.

3. In a heel-attaching machine, a fasteninginserting die, two carriersmovable upon the .die bodily in a direction from front to rear thereof,means arranged to vary the position of each carrier, and a pair ofheel-part-engaging arms pivoted upon each carrier for engagement withopposite sides of a heel-part.

4. The combination with a fastening-inserting die, of two L-shapedcarriers having arms situated at opposite sides of the die and armsextending from the opposite arms and being superposed, means forconnecting the carrier-arms adjustably to the die, andheel-part-engaging arms pivoted upon the superposed carrier-arms.

5. The combination with a fastening-inserting die, of two L-shapedcarriers having arms situated at opposite sides of the die and armsextending from the opposite arms and being superposed, there being slotsin the arms, clamping screws extending through the slots into the die,and heeLpart-engaging arms pivoted upon the superposed carrier-arms.

EMERSON C. GILL.

